docs: def order_by(self, *field_names):
          """
          Returns a new QuerySet instance with the ordering changed.
          """
          obj = self._clone()
          obj._clear_ordering()
          for field in field_names:
              if field.startswith("-"):
                  obj._ordering.append({ field.lstrip("-").replace("__", ".") : "desc" })
              else:
                  obj._ordering.append({ field : "asc" })
          return obj